Open AccessHigh energy nanosecond laser pulses delivered single-mode through hollow-core PBG fibers
Author(s) -
Jonathan D. Shephard,
Julian D. C. Jones,
Duncan Paul Hand,
Géraud Bouwmans,
Jonathan C. Knight,
P. St. J. Russell,
B. J. Mangan
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.000717
Subject(s) - materials science , optics , laser , core (optical fiber) , nanosecond , optoelectronics , optical fiber , fiber laser , photonics , photonic crystal fiber , physics , composite material , wavelength
We report on the development of hollow-core photonic bandgap fibers for the delivery of high energy pulses for precision micromachining applications. Short pulses of (65ns pulse width) and energies of the order of 0.37mJ have been delivered in a single spatial mode through hollow-core photonic bandgap fibers at 1064nm using a high repetition rate (15kHz) Nd:YAG laser. The ultimate laser-induced damage threshold and practical limitations of current hollow-core fibers for the delivery of short optical pulses are discussed.